Home / 21,936.98-30,273.03-12,378.89

Finding the Fourth Proportional to 21,936.98, 30,273.03 and 12,378.89

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Solution

The fourth proportional to 21,936.98, 30,273.03 and 12,378.89 is: 17,082.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,936.98 : 30,273.03 = 12,378.89 : x
  2. Step 2: Convert to fraction form
    21,936.98/30,273.03 = 12,378.89/x
  3. Step 3: Cross multiply
    21,936.98x = 30,273.03 × 12,378.89
  4. Step 4: Simplify right side
    21,936.98x = 374,746,516.92
  5. Step 5: Solve for x
    x = 374,746,516.92/21,936.98
  6. Step 6: Final answer
    x = 17,082.87

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.